This mod changes the way in which the subject of an entire topic is changed. Instead of just changing the subject of the first post, the subjects of all the messages in the topic get changed. See the attached image for more information.
How to install: The Package Manager should work in most cases.
Languages: This mod does not use languages.
Features - Changes subjects of all messages in a topic, not just the first. - Does not change all the subjects if the edited message is not the first post.